It's impossible to buy the software or to obtain information about it since there is no place to acquire it from. I couldn't find a developer or at least a page to obtain the necessary details. Because of this, I consider the software to be discontinued from development without any possibility of acquisition.
I couldn't find any information related to alternatives.
On a side story, there is an IntelliPoint Pro app hosted on the realpointpro website: http://www.realpointpro.com/products/default.asp